104
Section 5 - Scheduled Maintenance
4. Start the engine and follow the startup pro-
cedure to engage the water blasting system.
Engage the PTO and operate at idle speed for
30 seconds.
5. Disengage the PTO and return the truck to the
service position.
6. Check that the belt is riding on the center of
the pulleys. If it is not centered and riding
hard on either side of the pulleys, the blower
will have to be aligned by moving the mount
slightly in the slotted bolt holes. Repeat
alignment and tension steps until the belt is
set to the proper tension and centered on the
pulleys.
7. Tighten the mounting bolts securely.
Note:
Apply grease to the threads of the blower
and UHP pump adjusting bolts each time the
belts are adjusted to help prevent corrosion
and ensure the adjusting bolts will turn when
adjustment is required.
5.5 Periodic Water Blasting
System Maintenance Items
The primary components in the water blasting sys-
tem have specific stated service intervals. Other
components that support primary equipment re-
quire periodic inspection and routine maintenance.
Many of those items are mentioned in this section.
Tool Box Door Hinges And Latches.
Monthly/200 Hours:
• Lubricate and inspect all hinges.
• Inspect and lubricate latches. Replace dam
-
aged or worn out latches immediately.
Ladders And Inspection Panels
Monthly/200 Hours:
• Lubricate and inspect all hinges.
• Inspect and lubricate safety pins and latches.
Replace damaged or worn out safety pins
immediately if the spring becomes weak or
damaged.
Safety Pins
Weekly/50 Hours:
•
Lubricate the retaining ball or sliding shaft on
safety pins.
•
Inspect and test for proper operation. Replace
damaged, corroded or worn out pins imme-
diately.
Ball Valves
Monthly/200 Hours:
•
Open and close ball valves at least once each
month to keep them free and operating prop-
erly.
•
Lubricate and inspect valve shafts and handles.
Replace if badly corroded.
Charge Water Pump And Hoses
Weekly/50 Hours:
•
Inspect the charge water pump, hoses and
fittings for leaks and signs of wear or deterio
-
ration. Any questionable or leaking component
should be repaired or replaced before operat-
ing the system.
•
Run the pump and listen for unusual noises
and proper operation. Find and correct the
cause of unusual noises or erratic operation.
Bilge Pump And Automatic Switch
Weekly/50 Hours:
• Supply water to the high pressure pump stuff
-
ing box sump and monitor the operation of the
bilge automatic switch, bilge pump and drain
system. Correct any problems found.
Monthly/200 Hours:
•
Remove the lid on the automatic switch sump
and clean out accumulated debris that could
interfere with the switch operation or water
flow to the pump.
•
Test the switch for proper operation.
Blasting Head Thru-Shaft Motor
Monthly/200 Hours
• Adjust bearing pre-loads.
Summary of Contents for SK5500
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